Who Can Participate: Healthy volunteers between the ages of 18-50, who have no current psychiatric disorder or major medical illness (such as high blood pressure) may be enrolled in this study. Volunteers with a history of past bipolar depression or psychosis may not apply.

The study is conducted at the NUH Clinical Center in Bethesda, Maryland. The one testing sessions lasts up to 2.5 hours. There is no cost to participate and compensation is provided.

First Steps to Participate in Research: Learn study details, be pre-screened for eligibility, and consent to participate. Refer to study 02-M-0321. Se habla español.